Your either using hyperbole, or you really REALLY suck. I'm betting the former.

On IT+ I can get 800~1K without using JA's on VC, Q.Cont and GR, although GR varies between 500 and 1200 while QC goes between 700~1500 depending on how many hits land. Diss still dish's out 500~1K damage depending on target.

So yeah your just crying at this point in time that your super awesome spell was given a acc reduction to balance it out, not even a damage reduction just an accuracy reduction. Something you can fix with either sushi or /THF.
Is that within Abyssea or outside?

Either way, you're comparing High-Level NMs to Incredibly-Tough monsters.

Or End Game to a Merit Party.

...I don't get it.